I'm sure they've put signal blockers all the lives are laggy as do or getting banned now
So with signal blockers they target a set of frequencies for whatever the device is operating on in order to prevent it connecting to whatever it is it's connecting to, so if it's being blocked it's blocked, it won't cause bad connection or poor signal it would completely block.
What's happening is a high concentration of people in a relatively small space are trying to connect to the local masts so it's just jamming the network up.
Even though not everyone is live every phone is connecting to the mast in the area. Does that make sense?
Like when everyone is trying to send happy new year texts at the same time